If I believed CCleaner I would delete valid registry entries and that makes me very nervous.
CCleaner reports application path errors as in the attached file
The files are in these directories and the Fineprint vendor confirms this and advises that this is a bug.
Why would CCleaner report falsely?
The developers of said software(Fineprint) have registered their registry entries in a way that ccleaner doesn't recongize them as being attached to currently installed software.
This occurs from time to time and you should just right click the entries you wish to keep a mark exclude
Please read my signature to understand that not everything ccleaner (which is gentle) or other softwares (usually not as gentle) mark as invalid registry are really invalid.